70633217 has 4 divisors (see below), whose sum is σ = 70874580. Its totient is φ = 70391856.

The previous prime is 70633193. The next prime is 70633237. The reversal of 70633217 is 71233607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46730896 + 23902321 = 6836^2 + 4889^2 .

It is a cyclic number.

It is not a de Polignac number, because 70633217 - 2¹² = 70629121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70633217.

It is not an unprimeable number, because it can be changed into a prime (70633237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120242 + ... + 120827.

It is an arithmetic number, because the mean of its divisors is an integer number (17718645).

Almost surely, 2^70633217 is an apocalyptic number.

It is an amenable number.

70633217 is a deficient number, since it is larger than the sum of its proper divisors (241363).

70633217 is a wasteful number, since it uses less digits than its factorization.

70633217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241362.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 70633217 is about 8404.3570247818. The cubic root of 70633217 is about 413.3675005719.

The spelling of 70633217 in words is "seventy million, six hundred thirty-three thousand, two hundred seventeen".